with selective quenching and tempering i found o1 is just fine for choppers? id be interested to know why you find it unsuitable?
yes can be used but I wouldnt for a parang or a machete I use 52100 for my Kukuris (as I dont use O1 for anything any more haven't for years )
My Parangs where designed for the UK Military for hard use in jungle training so have to be as tough as possible so i picked a steel to do this it dosnt need or want very high hardness so they are initially Treated to 55Rc I have this done in Salt bathes which means i can have a quench held at the correct temperature to promote Lower banite formation through out the entire blank this is for only 30mins ( Full bainite would take a few hrs)
Bainite gives a much tougher Blade for the same hardness than martensite which is what we all mostly use and get from normal quench I dont get the full benefit but time is cost prohibitive it still gives a toughness lift of 10-15% over straight martensite ( all my 75Cr1 and 52100 Blades are Hted like this the 52100s to 59Rc mostly )
3.7mm Bushcraft style not had the temper drawn in any way jsut as done to 59Rc all through
[video=youtube_share;twUJkqOa_K0]https://youtu.be/twUJkqOa_K0[/video]
then the the Handle and spine is properly Drawn on temper just leaving the 3/4" back from the edge at the original 55Rc (still a little harder than a Local bought native parang .. the natives who tested it with SERE teams wanted the steels and HT )
[video=youtube_share;-dpb-SxEdd0]https://youtu.be/-dpb-SxEdd0[/video]
the drawing on you Khuk above if thats all you have done wont really do much its minimal and only in the area of the widest parts of the blade. The weakest point there is the narrow part at the Sharpening notch and the finger Choil
its relatively short and Solid so should be fine for chopping I havent drawn my Khukris even the 14" blade one as its banite and 8mm stock at that narrow point most native ones are 8 to 12mm spines
parangs are thinner 5mm ish and longer Mine only has a 7"-8" cutting edge but a long neck and handle so plenty of F=MA when a Big Squaddie is bashing a solid tropical hardwood tree
Machette is longer and thinner steel again and more flexible and Hted even softer high 40s to low 50s sharpen often I use CS80 for that
three differnt Blades that do different jobs in different style jungles
What i do is probably over kill for 99% of peoples use but I dont want the 1% to have a problem when Fighting in the jungle they have enough to worry about
